Mag. 1.8 earthquake - - 4km WNW of Cobb, CA, on 2018-12-12 13:42:17 -08:00
Minor magnitude 1.8 earthquake at 1 km depth
12 Dec 21:46 UTC: First to report: USGS after 4 minutes.
Local time at epicenter: 2018-12-12 13:42:17 -08:00
Depth: 1.1 km
Epicenter latitude / longitude: 38.8335°N / 122.77233°W (California, United States)
Nearest volcano: Clear Lake (15 km / 9 mi)
Nearby towns and cities:
2 km (1 mi) SSW of Glenbrook (Lake County)
4 km (3 mi) WNW of Cobb (Lake County) (pop: 1,780)
17 km (11 mi) SSE of Kelseyville (Lake County) (pop: 3,350)
18 km (11 mi) NE of Geyserville (Sonoma County) (pop: 862)
19 km (12 mi) W of Hidden Valley Lake (pop: 5,580)
19 km (12 mi) SW of Clearlake (Lake County) (pop: 15,200)
73 km (45 mi) NW of Napa (pop: 80,400)
124 km (77 mi) WNW of Arden-Arcade (pop: 92,200)
Primary data source: USGS
Estimated released energy: 3.2 x 107 joules (8.78 kilowatt hours) [learn more]
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|M 1.8||1.1 km||- 4km WNW of Cobb, CA||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.At magnitude 1.8, this quake was too small to be felt by humans, but it was recorded instrumentally.